Part A
AD5322BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1406 PCS
- Package
- MSOP-10
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5321BRMZ and AD5322BRMZ share the same 12-bit DAC architecture, MSOP-8 footprint, and I²C interface, making them functionally interchangeable in many designs. However, the AD5321BRMZ provides a single DAC channel while the AD5322BRMZ integrates two independent channels, so the replacement is only valid where the second channel is unused or where the board can accommodate the additional output. Verify channel requirements and reference configuration before substituting.
Resolution
High match
Package Type
High match
Channel Count
Validation required
Interface Type
High match
Parts at a glance
Part B
AD5321BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3782 PCS
- Package
- MSOP-8
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5321BRMZ | AD5322BRMZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 2 | Determines how many independent analog outputs are available; a single-channel device cannot replace a dual-channel one in multi-output designs. |
| Resolution | 12 bits | 12 bits | Sets the output voltage granularity; matching resolution ensures equivalent precision when substituting parts. |
| Interface Type | I2C (2-wire) | SPI (3-wire) | The digital communication protocol must match the host controller; I2C and SPI are not directly interchangeable without firmware and wiring changes. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Defines the compatible power rails; identical ranges allow the same supply design to be reused. |
| Output Voltage Range | 0 V to VREF | 0 V to VREF | Determines the achievable analog output span relative to the reference; matching spans preserve signal scaling. |
| Reference Input | External | External | Both require an external reference, so the same reference source and decoupling can be used in either design. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Identical footprint and pin count simplify PCB layout and allow drop-in mechanical compatibility. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Matching temperature ratings ensure both parts meet the same environmental requirements. |
| INL (Integral Nonlinearity) | ±1 LSB max | ±1 LSB max | Specifies worst-case accuracy deviation; equal INL means comparable linearity performance. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5322BRMZ | AD5321BRMZ |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 2 | 1 |
| Settling Time | 10µs | 10µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | I²C |
| Reference Type | External | Supply |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | ±2, ±0.2 | ±2, ±0.3 |
| Architecture | String DAC | String DAC |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD5321BRMZ and AD5322BRMZ?
The AD5321BRMZ is a single-channel 12-bit voltage output DAC, while the AD5322BRMZ is a dual-channel 12-bit voltage output DAC. Both are members of the Analog Devices AD532x family and share the same 12-bit resolution, 2.5 V to 5.5 V supply range, and 8-lead MSOP (RMZ) package, but the AD5322 provides two independent DAC outputs instead of one.
Are the AD5321BRMZ and AD5322BRMZ pin-compatible?
No. Although both devices are offered in the same 8-lead MSOP package, their pin functions differ because the AD5322BRMZ provides two DAC outputs. The AD5321BRMZ uses the available pins for a single VOUT, while the AD5322BRMZ assigns pins to VOUTA and VOUTB. Designers must verify the pinout in the respective Analog Devices datasheets before considering a layout change.
Do the AD5321BRMZ and AD5322BRMZ have the same resolution and DAC architecture?
Yes. Both devices are 12-bit voltage output DACs using a string DAC architecture, and both offer the same 12-bit resolution. The primary architectural difference is the number of DAC channels: one channel on the AD5321BRMZ and two channels on the AD5322BRMZ.
What supply voltage range do the AD5321BRMZ and AD5322BRMZ support?
Both devices operate from a single supply of 2.5 V to 5.5 V, as specified in the Analog Devices AD5321 and AD5322 datasheets. This makes them suitable for low-power, single-supply applications in portable and industrial systems.
What serial interface do the AD5321BRMZ and AD5322BRMZ use?
Both devices use a 2-wire I2C-compatible serial interface. The AD5321BRMZ and AD5322BRMZ support standard and fast I2C modes, allowing them to be controlled by a wide range of microcontrollers and digital signal processors.
Can the AD5321BRMZ be used as a drop-in replacement for the AD5322BRMZ?
No. The AD5322BRMZ provides two DAC output channels, while the AD5321BRMZ provides only one. A drop-in replacement would not be possible without redesigning the circuit to account for the missing second channel and the different pin assignments. Always consult the official Analog Devices datasheets for both parts before making any substitution.
What are the package and operating temperature specifications for the AD5321BRMZ and AD5322BRMZ?
Both the AD5321BRMZ and AD5322BRMZ are supplied in an 8-lead MSOP package and are specified for the industrial temperature range of −40°C to +105°C, as stated in the Analog Devices datasheets. The "RMZ" suffix indicates the MSOP package and RoHS-compliant construction.